US2017290306A1PendingUtilityA1

Fish counting device, fish counting method, fish count prediction device, fish count prediction method, fish counting system, and fish count prediction system

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Assignee: NEC SOLUTION INNOVATORS LTDPriority: Oct 10, 2014Filed: Aug 12, 2015Published: Oct 12, 2017
Est. expiryOct 10, 2034(~8.2 yrs left)· nominal 20-yr term from priority
Inventors:Jou AkitomiTakayuki KodairaMasato TaguchiTakako Nakatani
G06T 7/73G06T 7/60A01K 61/95G06M 11/00G06M 7/00
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PatentIndex Score
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Claims

Abstract

To provide a easily fish counting device, a fish counting method, a fish count prediction device, a fish count prediction method, a fish counting system, and a fish count prediction system. The fish counting device of the present invention includes: a measurement image acquisition unit 11 configured to acquire, over time, a plurality of measurement images of a region to be measured in a passage region where a fluid containing fish passes through; a fish position acquisition unit 21 configured to acquire positions of the fish in the measurement images; a fish movement line calculation unit 22 configured to calculate movement line(s) of the fish as tracks of movements of the fish on the basis of the acquired positions; and a fish counting unit 23 configured to count the fish on the basis of the movement line(s) of the fish in the measurement images to obtain a fish count.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A fish counting device comprising at least one processor configured to:
 acquire, over time, a plurality of measurement images of a region to be measured in a passage region where a fluid containing at least one fish passes through;   acquire positions of the at least one fish in the plurality of measurement images;   calculate a movement line of the at least one fish as a track of movement of the at least one fish on the basis of the acquired positions; and   count the at least one fish on the basis of the movement line of the at least one fish in the plurality of measurement images, to obtain a fish count.   
     
     
         2 . The fish counting device according to  claim 1 , wherein
 when the movement line overlaps with a counting region set in advance in the region to be measured, the processor is configured to count the movement line as the at least one fish.   
     
     
         3 . The fish counting device according to  claim 1 , the processor further configured to:
 extract an outline from each of the plurality of measurement images, wherein   the processor is configured to acquires the position of the at least one fish on the basis of the position of the outline in the plurality of measurement images.   
     
     
         4 . The fish counting device according to  claim 3 , wherein
 when an area enclosed in the outline satisfies an area condition set in advance, the processor is configured to acquire the position of the outline as the position of the at least one fish.   
     
     
         5 . A fish counting method for counting fish, the fish counting method comprising:
 acquiring, over time, a plurality of measurement images of a region to be measured in a passage region where a fluid containing the at least one fish passes through;   acquiring positions of the at least one fish in the plurality of measurement images;   calculating a movement line of the at least one fish as a track of movement of the at least one fish on the basis of the acquired positions; and   couting the at elast one fish on the basis of the movement line of the at least one fish in the plurality of measurement images to obtain a fish count.   
     
     
         6 . The fish counting method according to  claim 5 , wherein
 when the movement line overlaps with a counting region set in advance in the region to be measured, the movement line is counted as the at least one fish.   
     
     
         7 . The fish counting method according to  claim 5 , further comprising:
 extracting outlines from the plurality of measurement images, wherein   the position of the at least one fish is acquired on the basis of the positions of the extracted outlines.   
     
     
         8 . The fish counting method according to  claim 7 , wherein
 when an area enclosed in the outline satisfies an area condition set in advance, the position of the outline is acquired as the position of the at least one fish.   
     
     
         9 - 10 . (canceled) 
     
     
         11 . A program configured to execute the fish counting method according to  claim 5  on a computer. 
     
     
         12 - 14 . (canceled)

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